override host lb: harden the override host#45149
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Signed-off-by: wbpcode/wangbaiping <wbphub@gmail.com>
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Commit Message: override host lb: harden the override host
Additional Description:
In the override host, iff we failed to set the filter state (mainly because key collision, because this should never happens in practice), then the
override_host_statewill point to invalid pointer (use after free/move).This PR hardened it to at least ensure the
override_host_statealso be valid.Risk Level: low.
Testing: n/a.
Docs Changes: n/a.
Release Notes: n/a.
Platform Specific Features: n/a.